Metal-facing apparatus



Feb. 17, 1925.

B. c. BARTLEY METAL FACING APPARATUS Filed Jan. 5, 1923 2 Sheets-Sheet i 2 shet s -sheet 2 I smnmtoo 6'. M5667- B. c. BARTLEY METAL meme APPARATUS Filed Jan. 5, 1923 J. 601%) MM Feb. 17, 1925.

a .A m w \\/V//J// v 4 7 0 I .4 2 w Patented Feb. 17, 1925.

UNITED STATES BANKS G. BARTLEY, WASHINGTGN, DISTRICT OF COLUMBIA.

METAL-FACING APPARATUS.

Application filed January 5, 1923. Serial No. 610,891.

.7'0 all whom it may concern:

Be it known that I, BANKs C. BARTLEY, a citizen of the United States, residing at lVashington, District of Columbia, have invented certain new and useful Improvements in Metal-Facing Apparatus, of which the following is a specification.

My invention relates to apparatus for dressing or smoothing the surfaces, such as joints, of metal articles, and which is of a portable nature adapted to be worked by hand, although capable of being driven by power if that is available,- and it is so desired. The embodiment of my invention herein to be described, and illustrated in the accompanying drawings, consists of an apparatus for-dressing the engaging faces or joints of tools used in drilling or being oil and other deepwells. It is customary in drilling such wells to use heavy iron boring tools made in sections that are adapted to be united to each other end to end. These tools are subjected to violent jars and shocks as they are used, asis well known, and the sections frequently become separated from each other, to the great annoya-nceof the operator, and increased cost of drilling the well. Unless the joints between sections of the drilling tools fit each other with great nicety, the liability of the parts becoming separated is greatly increased, and in practice it becomes necessary from time to time to reface the joints in order that they may fit one another accurately.

My invention as herein illustrated has for its object to produce a tool or apparatus, that is portable and adapted to be used in the field or at the scene of the operation of drilling a well, for dressing the faces of the joints at the ends of the well drilling tools, which apparatus may be easily applied to the work upon which it is to operate and will dress the faces of the joints with great nicety and exactness.

In the accompanying draw.ings

Figure 1 is a central longitudinal sectional view, with parts shown in elevation, of an apparatus for dressing the faces of joints of well drilling tools, embodyingmy invention.

Fig. 2 is a view partly in top plan view and partly in horizontal section taken on the line II of Fig. 1.

Fig. 3 is a broken vertical sectional view taken on the line III of Fig. 9,.

Fig. 4 is a broken sectional view taken on the line IV of Fig. 1.

Fig. 5 is a bottom plan 'view showing the cutter-carrying ring detached.

Fig. 6 is a perspective view, enlarged, of one of the cutters. I

Referring to the drawings A indicates a tool for drilling or boring a deep well, it being of conventional construction. It is typical of the work upon which 'thea'pparatus shown is adapted to operate, and is sometimes herein termed, the work, an expression employed to indicate the article or object operated upon regardless of its particular construction and use. The drilling tool A is provided as usual with a tapering screw-threaded shank a at the base of which is a face a that is engaged by the end face of another tool section, connected with the section A by the screwthreaded shank a which enters a socket shaped to receive it, formed in the added section. The surface a should be in a true plane and perfectly smooth, as should also be the opposing face of the added section, to prevent undesirable move ments between the parts at the joint thus constituted, when the tool is in operation; and the apparatus that I shall describe has for its object to dress the surface a. from time to time. It comprises a housing 2, which is of bell-shape in its general construction, having a top or closing. head 4. Within the housing are mounted the several operating and moving parts of the apparatus. The lower portion of the housing constitutes a chamber in which are located the tools and the tool carrier, and which is adapted to receive the end of the work to be operated upon. The housing being properly placed over the end of the work is secured thereto by screws 9 seated in the lower portion of the skirt of the housing. The inner surface of the bell-shaped portion of the housing, above the screws 9, is formed with a cylindrical bearing surface 3, preferably quite broad, in engagement with which turns the tool carrier 24:. Through the axial center of the head 4- of the housing is formed a cylindrical opening 6,, which is surrounded by a hub? whose outer surface is smooth and cylindrical. In the side walls of the head portion of the housing are formed vertical slots or guides 5, preferably diametrically opposite each other, in which are mounted sliding bearings 11, 11. Supported between the opposite bearings 11 and united to them by screws 12 is a block 10 located within .the chamber in the head at of the housing. The central block 10 and the bearings 11, 11, at the ends thereof constitute a cross head adapted to move up and down in the ways formed by the vertical slots 5. In order that the parts 10 and 11 may be more rigidly united I form the hearing faces of the parts 11 with tenons 13 adapted to be seated in closely fitting mortises or recesses formed in the ends of the central block 10. The outer faces of the bearings 11 are flanged as represented in Fig. 2 so that whenthe parts are assembled and united by the screws 12 there can be no. lateral shifting of the crosshead.

There is a central cylindrical opening through the block 10 in axial alignment with the opening 6 through the housing head, and in such opening is supported a bushing 14, united with the block by a key 15. The bushing is formed at its lower end, witha flange l6, and restingupon-this flange and surrounding the bushing is a bearing on which turns the tool-holder 24.

The upper end of the bushing 1s is externally screw-threaded as indicated at 42, and has engaging. therewith the lock nuts 31 that serve to clamp the bushing in place. The lower of the these nuts is represented as engaging with a face 13 of the block 10 which is preferably at the bottom of a shallow recess formed to receive the lock nuts. The bushing 14: is provided with an externally screw-threaded extension 17, of reduced diameter andofa length such that it extends beyond the upper. end ofthe central hub 7 of the head of the housing through the opening 6 in which the extension passes. An internally screw-threadedsleeve. 20, carrying at its lower end a spur wheel 18,- which is fast thereto, is screwed upon the extension 17 of the bushing. The spur wheellS rests against a smooth bearing face 8 of the head of the housing, surrounding and concentric with the opening. 6. The upper end of the sleeve 20 is externally screwsthreaded. and upon it are mountedthe lock nuts 19, adapted to engage'with the upper, outer end of. the hub 7. It will be seen that when theparts are assembledas represented in Fig. 2 and-the lock nuts 19 screwed into place, the sleeve 20, which closely fits the bearing surface formed by the wall'of. the opening 6. is held against longitudinal, that is, up and down, movements, within the opening 6, but that it is free to rotate therein. Such rotation is effectedby means of'a pinion 21 thatmeshes with the wheel 18 and is supported by a shaft 22 that, in'turn', is mountedin ahean ing 23 in the head of the housing. The end of the shaft 22 is squared or otherwise shaped to receive a handle by which the shaft may be turned and the sleeve 20 rotated at will. By reason ofthe wheel 18 being united with the sleeve 21 and the lat ter having screw-threaded connection with the extension 17 of the bushing 14, it follows that when the pinion 21 is turned the bushing 14: will be moved up or down, according to the direction in which the pinion is turned, and that such up and down movements are comn'iunicatedto the cross head andto all the parts supportedithereby, such as the tool carrier and the mechanism for driving the latter.

As has been stated, the tool carrier is designated 24 and is of bell-shape, so that it may fit over the spindle (t of the work and permit its lower end to come into proximity to the surface a to be dressed. The lower exterior surface of thetool. carrier is shaped to fit the inner bearing surface 3 of the housing. There is an axial opening through the upper or inner end of the tool-holder that accurately fits the bearing 23 and turns thereon. To the upper horizontal face of the tool carrier is secured by screws 27, a bevel wheel 26 with which engages a bevel pinion 28 mountedwon. a shaft 29, that extends outward radially through the housing and turns in a bearing30 in one of the slide bearing pieces 11 of the cross head. The end of the shaft 29is shaped toreceive an op erating handle such as would be used if the apparatus were to be manually operated, or a drive wheel if it were to be operated by power.

The bushing 14 has through it a central axial opening in which is. supported a cen tering rod 33 having a pointed end 34 adapted to engage with a recess formed in the end of. the shank a of the work. The centering rod 33 and the clamp bolts 9 hold the hour;- ing of the apparatus in proper position with reference to the work, and-hold itfirmly.

36 indie-ates a cap adapatedto fit over the central hub 7 of the head of the housing and to be secured thereto by screws There is an opening through the upper end of the cap 36 concentric with the camtering pin 33, whien extends through and above the cap, which opening is considerably larger in diameter than thepin 33. This opening is internallyscrew-threaded and there engages therewith the externally screw-threaded extension.37 of a clamp that isadapted to tightly engage with the pin 33, and which. when thus engaged,,holds it in place. The clamp is formed of two parts, 38. 33, united by ahing e 4,0, and adapted to be drawnv together so as to engage with the pin 33, by a screw 39. The. two partsof the clamp are internally channelled to receive a packing 41 of suitable material to insure that the clamp shalltightly grip the pin 33 when the clamp is closed thereupon. It will be understood that the screw-threaded extention 36is divided, a section being carried by each of the parts 38, 38 of the clamp.

The cutting or surface-dressing tools 47 are preferably carried by a separate ring adapted to be set in a rabbeted seat 44 formed in the lower end of the tool carrier 24, where it is held by screws 45. .The tools 47 may be of any suitable shape or form, those shown being metal cutting tools with inclined cutters 48 arranged to shave or draw out the surface a as the tool holder is revolved, carried by the blocks fitted in dovetailed recesses formed to receive them in the ring 43, where they are held by screws 48. Other forms of tools than those shown may be used as the nature of the work to be performed may require. The apparatus is operated as follows:

The cross head carrying the tool holder is elevated well up in the housing, by turning the shaft 22 and the train of gearing that has been described. The work A. is then adjusted within the housing and clamped in place by the screws 9. The clamp that engages with the centering pin 33 is released during these adjustments to pernnt the pin to be freely moved longitudinally. After the work has been placed and secured by the screws 9, the centering pin 33 is adjusted until its pointed end loosely engages with the work, when the clamp is secured to the pin, by tightening the screw 39. The final and fine adjustment of the centering pin is then accomplished by rotating the clamp, which now carries the pin with it both in its rotary and longitudinal movements, the screw-theraded engagement of the extension 37 of the clamp with the cap 36 of the hous ing permitting the desired delicate and slow longitudinal movements of the rod. The cross head is now again operated, but in a reverse direction, so as to bring the tools into working engagement with the face a that is to be dressed, after which the toolholder 24 may be revolved, through the bevel gearing 26, 28, carrying the tools 47 over the surface a. As the face a is reduced and smoothed the crosshcad is slowly moved to advance the tool-holder and hold the tools to their work, these operations continuing until the desired surface has been produced.

Should it be desired to resurface the end of a tool that is not provided with a shank a, such as the end of the tool section that is to be coupled with the section shown in the drawings, I would insert into the end of such section a. separable piece shaped like the shank a during the dressing operation in order to give a bearing for the end of the centering pin 33.

It will be seen that the tool-holder is strongly supported by bearings, at 3 and 25,

that insure that it shall move true with ref erence to the work, so that liability of the tool-holder vibrating when in operation is reduced to a minimum. The bearing 3 is circumferential of the bell-shaped tool carrier 24 and near the open end thereof, being thus relatively distant from the axial center of the tool carrier, while the bearing 25 is opposite the end of the work and close to the axial center of the oc rrier, with which it is concentric. So likewise the other moving parts of the apparatus are strongly supported and are so arranged that delicate adjustments may be made and held.

The apparatus while strong is not cumbrous and is by reason of its simplicity light, comparable with the necessary strength that it must have.

What I claim is:

1. A surfacedressing apparatus, co1npris ing a housing open at one end to receive the work, means for securing the housing to the work, a tool carrier mounted within the housing, means for operating the tool carrier also located within the housing and extending outward radially through the housing, and means for adjusting the tool carrier toward and from the work located within the housing.

2. A surface-dressing apparatus, comprising a bell-shaped housing, a bell-shaped tool carrier mounted within the housing and having circumferential bearing engagement therewith to steady it while permitting it to rotate about a longitudinal axis, means for operating the tool carrier and dressing tools at the edge of the carrier.

3. A surface-dressing apparatus, comprising an open-ended housing, means for securing the wor: in the end of the housing, a tool carrier mounted within the housing, a center support for the work longitudinally adjustable in the housing, and means for rotating the tool carrier and for adjusting it toward and from the work, such means being movable relative to the center support and the housing.

4. A surface-dressing apparatus, comprising a bell-shaped housing, means for securing the work in the end of the housing, a tool carrier mounted within the housing, an axially arranged center support for the work passing through the tool carrier and sup ported in the housing, means for turning the tool carrier about the center support, and means for adjusting the tool carrier longitudinally of the center support.

5. A surface-dressing apparatus such as described in claim 4, including also means for adjusting the center support and holding it after adjustment.

6. A surface dressing apparatus, comprising a housing open at one end adapting it to be set over the work, means for securing the housing to the work, a tool carrier also open at one endadapting it to set over: the work, located within the housing and having circumferential engagement near its open end with an interior bearing carried by the housing, and a central bearing beyond the end of the work, outterssupported by the carrier at its open end, means forturning the carrier, and means for adjusting it toward and from the work.

7. A surface-dressing apparatus, comprising a bell-shaped housing, means for securingthe housing to the work, a cross-head supported-in the head: portion of the h'ousing, means-fol" adjusting the cross-head;toward and from the open end of the housing, a rotatable tool-carrier supported by' the cross-head; andmeans for operating the toolcarrier also carried by the cross head,

8. A surface-dressing apparatus; comprising a bell-shaped housing in the'head portion of which are formed ways and the inner surface of which near the open end is formed to constitute a cylindrical bearing, a tool-carrier arranged within the housing having bearing engagement with the said cylindrical interior wallsof the housing, a cross-head mountedfiin the waysin thehead ofthe housing by which the tool-carrier is supported, means for adjusting'the crosshead to move the "tool-carriertoward or from the work, and means for rotating't'he' toolcarrier.

9. A surface-dressing apparatus such as described'in claim-7, includingalsoa center pin for engaging witlrthe workat' the axis of the tool-carrier, the cross-headbeing movable axially' relative to the centering pin.

10. A surface-dressing apparatus,- comprising a housing adapted" to encircle the work, means for uniting the housing; to tliework, a cross-head supported inthehousing movable onv straight lines toward: and fromithe work, a hollow bushing supported in the cross-head inlinewith-the axis of the work, a centering pin passing freely through the bushing for engagement with the work, a bearing supported by the bushing below the cross-head; a rotatable tool carrier mounted on the said bearing, means for adjusting the cross-head: toward and from the work, and means for rotating the tool-carrier.

11. A siu'iace-dressing apparatus comprising asupport adapted tov be secured to the work, an adjustable cross head mounted in the support, a rotatable tool-carrier supported by the cross-head, av bushing supported in the cross-head concentric with the axis about which the tool-carrier turns, the bushing being provided with an externally screw-threaded extension, a sleeve mounted in the support and held against longitudinal movement but free to rotate, having engagement with the screw threads or the extension of the said bushing, and means for rotating the sleeve to adjust the crosshead and tool-carrier.

12. A. surface-dressing apparatus such as described in claim 10, including also a centering pin for engagement with the end of the work, passing through the bushing, which is made hollow to permit such passage, and means for holding the centering pin in working position carried by the support.

13. A surface-dressing apparatus, comprising a bell-shaped housing, a cross-head mounted in guides in the head of the housing, a bell-shaped rotatable tool-carrier supported by the cross-head located within the housing and having bearing engagement with the interior walls thereof to steady it, a screw-threaded extension carried by the cross-head, a sleeve mounted upon the said screw-threaded extension and supported in the head-of the housing so as to be free to rotate but not to move longitudinally, and means for rotating the sleeve to adjust the cross head and tool-carrier toward and from the work.

14. The combination stated in claim 12, including a centering pin for engagement with the wor: passing through the screwthrea'ded extension and the cross-head, the pinbeing-longitudinally movable relative to the cross-head and the housing, and means for adjusting the pin relative to the work and holding it in place after adjustment.

15. A surface-dressing apparatus, comprisinga bell-shaped housing, a bell-shaped rotatable cutter-carrier mounted within the housing and having bearing engagement with the inner walls ofthe housing to steady it, the open end of the carrier being rabbeted, a tool-supporting ring seated in the rabbet of the tool-carrier, and means for rotating the tool-carrier and adjusting itwith reference to the work.

Br'N-KS C. HARTLEY. 

